package com.kuang.pc;

import java.util.concurrent.locks.Condition;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

public class C {
    public static void main(String[] args) {
        Data3 data = new Data3();
        new Thread(()->{for (int i = 0; i <10 ; i++) {
            data.printA();
        }
        },"A").start();
        new Thread(()->{
            for (int i = 0; i <10 ; i++) {
                data.printB();
            }
        },"B").start();
        new Thread(()->{
            for (int i = 0; i <10 ; i++) {
                data.printC();
            }
        },"C").start();
    }
}
class Data3{ // 资源类 Lock
    private Lock lock = new ReentrantLock();
    private Condition condition1 = lock.newCondition();
    private Condition condition2 = lock.newCondition();
    private Condition condition3 = lock.newCondition();
    private int number = 1; // 1A 2B 3C
    public void printA(){
        lock.lock();
        try {
// 业务，判断-> 执行-> 通知
            while (number!=1){
// 等待
                condition1.await();
            }
            System.out.println(Thread.currentThread().getName()+"=>AAAAAAA");
// 唤醒，唤醒指定的人，B
            number = 2;
            condition2.signal();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            lock.unlock();
        }
    }
    public void printB(){
        lock.lock();
        try {
// 业务，判断-> 执行-> 通知
            while (number!=2){
                condition2.await();
            }
            System.out.println(Thread.currentThread().getName()+"=>BBBBBBBBB");
// 唤醒，唤醒指定的人，c
            number = 3;
            condition3.signal();//5、8锁现象
           // 如何判断锁的是谁！永远的知道什么锁，锁到底锁的是谁！
            //深刻理解我们的锁
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            lock.unlock();
        }
    }
    public void printC(){
        lock.lock();
        try {
// 业务，判断-> 执行-> 通知
// 业务，判断-> 执行-> 通知
            while (number!=3){
                condition3.await();
            }
            System.out.println(Thread.currentThread().getName()+"=>BBBBBBBBB");
// 唤醒，唤醒指定的人，c
            number = 1;
            condition1.signal();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            lock.unlock();
        }
    }
}
